Procedures to develop a computerized adaptive test to assess patient-reported physical functioning

Erin McCabe; Douglas P. Gross; Okan Bulut

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Procedures to develop a computerized adaptive test to assess patient-reported physical functioning

机译：Procedures to develop a computerized adaptive test to assess patient-reported physical functioning

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Purpose The purpose of this paper is to demonstrate the procedures to develop and implement a computerized adaptive patient-reported outcome (PRO) measure using secondary analysis of a dataset and items from fixed-format legacy measures. Methods We conducted secondary analysis of a dataset of responses from 1429 persons with work-related lower extremity impairment. We calibrated three measures of physical functioning on the same metric, based on item response theory (IRT). We evaluated efficiency and measurement precision of various computerized adaptive test (CAT) designs using computer simulations. Results IRT and confirmatory factor analyses support combining the items from the three scales for a CAT item bank of 31 items. The item parameters for IRT were calculated using the generalized partial credit model. CAT simulations show that reducing the test length from the full 31 items to a maximum test length of 8 items, or 20 items is possible without a significant loss of information (95, 99% correlation with legacy measure scores). Conclusions We demonstrated feasibility and efficiency of using CAT for PRO measurement of physical functioning. The procedures we outlined are straightforward, and can be applied to other PRO measures. Additionally, we have included all the information necessary to implement the CAT of physical functioning in the electronic supplementary material of this paper.

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《Quality of life research: An international journal of quality of life aspects of treatment, care and rehabilitation》 |2018年第9期|2393-2402|共10页
作者
Erin McCabe; Douglas P. Gross; Okan Bulut;
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作者单位

Department of Rehabilitation Science, University of Alberta;

Department of Physical Therapy, University of Alberta;

Centre for Research in Applied Measurement and Evaluation;

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原文格式 PDF
正文语种英语
中图分类医药、卫生;
关键词
Computerized adaptive testing; Physical function; Assessment; Patient-reported outcome measure; Work disability; Item response theory;

Procedures to develop a computerized adaptive test to assess patient-reported physical functioning

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